Potash123 26 #1 Posted April 6 My early Hayterette has probably never had its disc removed. I have used my normal tactics of drilling three holes close to the boss and using my three pronged puller, no joy. Tried heat, no joy. Now have it soaking in WD40 for how long I wonder. Has anyone else got any tips on removal. We all know how much the new disc costs. thank you. Share this post Link to post Share on other sites
davey 0 #2 Posted April 9 Hayterette discs are threaded with 7/16s unf. The bolt that holds the disc on is a smaller diameter of 3/8. This means that if you get a long 7/16 unf bolt (about 2 1/2 to 3 inches long) and wind it into the disc it will draw the disc off the shaft. I know this as I did 2 only yesterday, an early 70s 3.5hp one that had never been off and an early 80s 3hp one. They came off quite easily. The only drama I had was that I had to run a 7/16 bottoming tap through both discs quickly as the beginning of the thread was slightly fouled on each Share this post Link to post Share on other sites
Potash123 26 #3 Posted yesterday at 04:18 PM Will go through all my nuts and bolts in search of one. Thanks for reply. Share this post Link to post Share on other sites
davey 0 #4 Posted yesterday at 04:51 PM (edited) I got some 3" high tensile ones off ebay, just to be sure, probably could have got away with a 2" one in hindsight. Best of luck! Edited yesterday at 04:52 PM by davey Share this post Link to post Share on other sites
Potash123 26 #6 Posted 4 hours ago Tried a 3" bolt as Davey suggested would not budge. Back to square one. Share this post Link to post Share on other sites
